Quote Originally Posted by buickman104 View Post
Although nowhere near as modded as you mine does the same thing. Do you have poly or solid mounts as well?
Sorry for the late reply, I'm pretty sure they're solid. It also has a weird "moaning" sound that has been present for ~5 years. He had a tuning video on Youtube where the sound was present and nobody could track down the issue. I initially thought a belt or pulley but even after shutoff it fades away after 1-2 seconds. No performance impact or issues, but that coupled with the idle is pointing me to a vacuum leak.